Rename to auto-update

.github/workflows/auto-update.yml

@@ -1,4 +1,4 @@
-name: autoupdate
+name: auto-update
 on:
   workflow_dispatch:
   schedule:
@@ -68,7 +68,7 @@ jobs:
           labels: automerge
           body: |
             This pull request is auto-generated by GitHub action.
-  merge-update-readme:
+  merge-readme:
     runs-on: ubuntu-latest
     needs: update-readme
     steps: